The mother dog knows that there are fewer children, even if the mother dog does not know how to count, but as the number of puppies decreases, the mother dog will feel uncomfortable, because without the dog to drink its milk, the mother dog will have symptoms of milk engorgement. , so you will find that you have fewer children. After all the pups are sent away, the mother dog will be sad for a while, and may appear in poor spirits and get angry, but this state will not last long.